As part of Bigtop release 1.2 road-map, I upgraded hadoop to version 2.7.3 last week. Unfortunately it appears the recent changes (HADOOP-11252) in Hadoop 2.7.3 has broken source-level compatibility resulting in Apache Graph build-break. This issue has been reported by https://issues.apache.org/jira/browse/GIRAPH-1112. The good news is, it looks like the failure has been resolved by https://issues.apache.org/jira/browse/HADOOP-13579 that is targeted for Hadoop 2.7.4.
The question is, should we target hadoop 2.7.4 or maintain Hadoop 2.7.2 for bigtop v1.2.0 ?
